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, 5Sheets-Sheet 2 J. UPSDALE.

TRAVERSE WARP MACHINE. No. 435,002. Patented Aug. 26, 1890.

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Patented Aug. 26, 1890.

(No Model) (No Model.)

5 Sheets-Sheet 4. J. UPSDALB.

TRAVERSE WARP MACHINE.

' Patented Aug. 26. 1890.

Inventor UNITED STATES PATENT OFFICE.

J OI-IN UPSDALE, OF LQNDON, ENGLAND.

TRAVERSE-WARP MACHIN E.

SPECIFICATION forming part of Letters Patent No. 435,032, dated August 26, 1890.

Application filed September 2, 1889. Serial No, 322,649. (No model.) Patented in England January 5, 1858, No. 215.

To all whom it may concern.-

Be it known that I, JOHN UPSDALE, merchant, a subject of the Queen of Great Britain, residing at 4: Falcon Avenue, Falcon Street, London, England, have invented certain new and useful Improvements in TraverseWVarp Machines, (for which I have received Letters Patent in Great Britain, No. 215, of January 5, 1888,) whereof the following is a specification.

My invention relates to traverse-warp machines adapted to the manufacture of Milanese silk taffeta and other such like warp fabrics of the class in which the taking-up bar places the thread on the needles, which isknown as the lap, after which what is termed pressing takes place to complete the loop, thus producing the ordinary traverse Milanese silk taffeta.

The object of my invention is mainly to produce such a fabric with thickened stripes across it at intervals, which fabric is especially adapted for use inmaking gloves with thickened finger-tips, as well as for other purposes. In order to produce this fabric, I have devised means whereby, after weaving the fabric of uniform thickness in the ordinary way on the wellknown traverse-warp machine, a portion of the machinery is stopped while the taking-up bar places another'lap on the needles during the time that the thickened stripe is being produced. The pressing then takes place, completing the loop with two threads in it instead of one only, as in the ordinary Milanese silk taffeta, thus doubling the number of threads in each loop, or even adding more threads, if required, thereby thickening the fabric to any extent desired.

In carrying out my inventton I employ a machine constructed substantially in the manner shown and described in the specification of William Hemsleys British Patent No. 13,635 of 1851. In this machine the various actuating-cams are so formed that two courses of work are produced for one revolution of the camshaft, each cam being formed with,

the two opposite sides of its circumference of exactly the same contour. In order to enable, in such a machine, two laps to be placed upon the needles in place of a single lap, as heretofore, each time before pressing takes place, I provide for changing the contour of one-half of someof the cams, so that after the first lap has been made the presser-bar may remain out of action and the sinkers remain depressed so that their nibs may keep this lap divided from theloops of work which remain on the stems of the needles. I also provide for reducing the tension on the threads passing from all the bobbins just at the time when pressing takes place and the loops of work on the stems of the needles are cast off. Other small improvements and modifications are also made in the mechanism.

My improvements, as will be seen from the foregoing, consist, broadly speaking, first, in the combination, in a traversewarp machine, of cams of varying contour or variable outline, with the presser-bar, sinkers, the taking-up points, the traverse bar, and other devices actuated by them to throw in the additional threads required to form another lap on the needles during the time the thickened stripe is being produced, and, second, in the combination, with the mechanism above described, of means for reducing the tension on the threads at the moment of pressing.

The particular subject-matter claimed is specifically designated at the close of the specification.

The accompanying drawings show so much only of one form of apparatus adapting my improvements to the machine described in I-Iemsleys British patent, above mentioned, as is necessary to illustrate the subject-matter herein claimed.

Unless otherwise designated, the parts are of usual well-known construction and operation.

Figures 1 to 12, both inclusive,show face and edge views of the various actuating-cams, illust-ratingtheir details of construction. Figs. 13 and 14 show, respectively, a plan at one end of the machine and a vertical transverse section, parts being in elevation, through the tension-reducing portion of the machine. Fig. 15 is a diagram showing the connections between the presser-bar and its cam. Fig. 16 is a similar view showing the connections between the sinkers and their actuatingcams. Figs. 17 and 18 show, respectively, the connections between the points and their actuating-cam and between the traverse bar and its actuating-cam.

Figs. 1 and 2 show the details of the presser-bar-actuating cam, one portion A of which is radially slotted so as to be adjustable relatively to the cam-shaft by means of clamping-bolts B on the fixed portion of the cam. The actuating contours of this cam on opposite sides of the shaft'are similar when the movable part A is locked in its outward position. Consequently the cam will cause the presser to act against the beards of the needle after each lap and weave the fabric of uniform thickness. VJhen, onthe contrary, the movable piece A is retracted or set inward, the cam will act on the presser-bar once only during each revolution, instead of twice, as before, and consequently will only cause the presser-bar to act after two laps have been placed on the needle.

Figs. 3 and 4 show the cam which raises and lowers thesinkers, with an adjustable or movable piece 0, secured on the fixed portion of the cam by bolts D. When this movable piece is locked in its outward position, as shown, the sinkers would remain down while the second lap was being placed on the needle to form the rib in the fabric. In its inner position no part of the movable piece 0 projects beyond the circumference of the cam. The sinkers can consequently rise during the formation of each lap, and consequently the ordinary traverse warp may be made. A small depression E in the cam-edge reduces the descent of the sinkers during the time of the knocking over of the work when there are two laps on the needles. When making ordinary traverse warp, this depression is rendered inoperative by moving outward an adjustable piece F, bolted to one side of the cam, as shown, thus increasing the descent of the sinkers during the knocking over, when there is only one lap on the needles.

Figs. 5 and 6 show the cam which moves the sinkers forward to knock over the work. The half Got this cam (shown by dotted lines in Fig. 5,) is so made that it can be entirely removed while the machine is producing thickened work. This removal may be effected by taking out the securing-screws g, which attach the cam-section to the hub G. The opposite or fixed half of this cam has an adjustable piece H bolted to it, as above described, which, when the portion Gis removed, is set out, as shown, so as to give the sinkers a greater forward movement for knocking over the work when there are two laps on the needle. points have also to be somewhat modified when two laps are being placed upon the needles.

Figs. 7 and 8 show the cam which gives a backward and forward movement to these points. WVhen the points are putting the second lap upon the needles, they require a little more forward movement, which is given by means of an adjustible pieceIon the cam, which at this time is set forward or outward into the position shown. The piece is re- The cams for actuating the take-up tracted out of action when producing ordinary traverse warp.

Figs. 9 and 10 show the cam giving vertical movement to the take-up points. A hollow J in the cam-edge moves these points upward a little later when two laps are being placed upon the needles than when so placing a single one, so that the points may not be raised until tension has again been put upon the threads. A movable piece J on the cam is set out to fill this hollow when placing a. single lap on the needles.

Figs. I1 and 12 show the cam giving endwise movement to the traverse-bar. Two adj ustable pieces K K are secured upon opposite sides of the edge of the cam, one slightly behind the other. The outwardly-projecting edge of the forward or upper piece K constitutes a rise corresponding with the one on the opposite half of the cam, each rise doing its work in equal periods when placing a single lap on the needles. In so placing two laps this piece is withdrawn, thus putting it out of action, and the corresponding lower or rear piece is moved forward instead, so as to act a little later than its predecessor correspond- I ently with the later rising of the taking-up points during this operation.

In Fig. 15 the connection. a between the presser bar a and its operatingcamA is shown. It is similar to that illustrated in the British patent above mentioned and needs no specific description. In Fig. 16, b indicates one of the sinkers, C C the operating-cams, and b the connections between the sinkers and the cams. In Fig. 17, 0 indicates one of the points, I the operating-cam, and tithe connections. In Fig. 18, d indicates the traverse-bar, k the operating-cam,and d the connections. In all these figures e indicates one of the needles. The parts shown in the abovenamed figures are similar to those shown in the British patent above named, my invention in this connection consisting merely in the formation of the cams.

Figs. 13 and 14 show mechanism for relieving tension on all the threads at the time when pressing takes place, Fig. 13 being a plan taken near one end of the machine, showin g some of the endless chain of bobbins upon which the threads are wound, and Fig. 14 a vertical section through the same and other parts of the mechanism. These figuresshow a series of bobbins L, upon each of which several threads are wound, and each of which is mounted on its respective carriage M, the

carriages being hinged together to form anend to end of the machine. The ring in turn rests on arms S,projecting from two parallel rock shafts T, mounted in suitable bearings in the machine. Other arms U on these rockshafts are coupled by pivoted links with a lever V, rocking on an intermediate pivot 12, which lever isitself coupled by a pivoted adjustable link to a leverV rocking on a fulcrum '0, which lever V, ora friction-roller o thereon, is acted upon by a wiper or cam projection W" on a cam W, mounted on the camshaft. This cam projection W at each revolution and just before the pressing off of the work rocks the shafts T, thus lifting the ring R, and with it all the levers P and weights 0, thereby relieving the threads of tension and enabling the sinkers to knock, as it is called, the loop or lap over the needle-head to complete the loop in the thickening courses, which cannot be done without.

In addition to the lifting-arms S, each end of the ring R is also lifted by a lever X, rocking on a fixed center X and actuated at one end by an arm Y on one of the shafts T, while the other end acts on a pin Z, carried bya projection Z from a plate secured to the ring R.

W'hen ordinary traverse warp is to be made, the link V coupling the levers V V, is disconnect-ed, so as to leave the ring R inactive.

\Vhen fabric with stripes of thickened Work across it at intervals is to be produced, the desired length of plain fabric is first made. The machine is then stopped and the cams are shifted or the desired changes made therein, as above mentioned, and the machine again worked until the desired length of thickened fabric has been made, when the machine is once more stopped and the cams again shifted or changed to adapt the machine to produce plain work, and so on.

Thickened work with thrice the number of threads in each loop, instead of double the number of threads therein, may be produced by so forming the cams as to produce three courses of ordinary traverse-Warp fabric in succession, with portions of such cams made capable of being put out of action Whenever desired, in a manner similar to that hereinbefore described.

The operation of the machine will readily be understood from the foregoing description.

Myimproved machine possesses the following characteristic distinctions from preceding machines of a similar class, both in construction and operation-via, a portion of the machinery is stopped while the taking-up bar places one or more laps on the needles during the production of the thickened stripe, after which the pressing takes place, completing the loop, with its various threads, in simultaneously relieving the tension on all the threads at the moment of pressing the two thread loop, in so organizing the cams that by the shifting of their actuating-surfaces they may be able to produce a single or an increased thickness of fabric, and the adaptation of the cams to the formation in a single revolution either of two successive single laps or of a double lap.

What I claim as new and as of my own invention isi l. The combination, substantially as hereinbefore set forth, in a traverse-warp machine, of a presser-bar with a cam of varying contour or variable outline to hold the presserbar out of action after the first lap of the fabric has been formed until the formation of the second lap thereof, means for varying the contour of the cam, and connections between the cam and the presser-bar.

2. The combination, substantially as hereinbeforc set forth, in a traverse-warp machine, of sinkers with a cam of varying contour or variable outline adapted to .hold the sinkers out of action during the formation of a second lap of the fabric, means for varying the contour of the cam,and connections between the cam and sinkers.

3. The combination,substantially as hereinbefore set forth, in a traverse-Warp machine, of sinkers with a knock-over cam of varying contour or variable outline to vary the range of movement of the sinkers, means for vary ing the contour of the cam, and connections between the cam and the sinkers.

4c. The combination, substantially as hereinbefore set forth, in a traverse-warp machine, of taking-up points with a cam of varying contour or variable outline to vary the backward and forward movements of these points, means for varying the contour of the cam, and connections between the cam and the points.

5. The combination, substantially as hereinbefore set forth, in a traverse-warp machine, of taking-up points and a raising and lowering cam of varying contour or variable outline, means for varying the contour of the.

cam, and connections between the cam and the points.

6. The combination, substantially as hereinbefore set forth, in a traverse-warp machine, of a traverse-bar with a cam of varying contour or variable outline adapted to impart an endwise to-and-fro movement to said bar, means for varying the contour of the cam, and connections between the traverse-bar and the cam.

'7. The combination, substantially as hereinbefore set forth, in a traverse-Warp machine, of bobbins, their tension or friction devices, means for simultaneously relieving the tension thereon, the. sinkers and their actuatingcams, means for varying the contour of the cams, said cams being adapted to knock the loops or lap over the needle-head to com-,

plete the loops in the thickening courses While the tension on the threads is thus reduced, and connections between the cams and the sinkers.

8. The combination, substantially as hereinbei'ore set forth, in a traverse-warp machine, of the prosser-bar, the sinkers, the threadmeans for varying their contour, and connections between the cams and the parts operated thereby, all these members co-operatlng to produce a second lap on the needles before pressing and while the threads are relieved from tension.

JOHN U PSDALE.

Witnesses:

R. W. DUNNETT, 4 Falcon Avenue, E. 0., Clerk.

JOHN UPSDALE, J unr., 4 Falcon Avenue, E, 0., Warehouseman. 

